Issue Date: November 22, 1995
Revision Date: April 18, 1997
 

FDR Services, Inc.

GasPak Vapor Monitoring System

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE)

Detector:

Output type:

quantitative

Sampling frequency:

intermittent

Operating principle:

product permeable detector

 

Test Results (averages of multiple concentrations):

 

 

 

benzene


heptane,
3-methyl

 

hexane

 

iso-octane

Accuracy (%)

103

102

107

103

Bias (%)

-1

1

2

1

Precision (%)

2

2

4

2

Lower detection limit (ppm)

1

1

1

1

Specificity (%)

100

100

102

101

 

 

pentane,
2,4-dimethyl

 

pentane,
2,3,4-trimethyl

 

 

toluene

 

 

m-xylene

Accuracy (%)

105

104

104

99

Bias (%)

1

1

1

-6

Precision (%)

3

3

3

4

Lower detection limit (ppm)

3

1

1

4

Specificity (%)

101

100

100

94

Specificity Results:
See results above.

Comments:
Detection times were not directly measured.  However, evaluator states, “experiential evidence predicts that the detector response will reach ‘alarm’ conditions (30% of maximum fresh fuel response) at a distance of 5 meters in slightly over one day.”
Each cartridge is used once, then replaced by another.
GasPak is produced and analyzed by Fayette Environmental Services, Inc., with exclusive marketing and implementation rights assigned to FDR Services, Inc.

FDR Services, Inc. 

Evaluator:  David G. Bray, Ph.D.

Manufacturer’s Previously Listed Contact Information is No Longer Valid.

University of Missouri - Columbia

 

Tel:  (573) 882-2439

 

Date of Evaluation:  07/27/94

 

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